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45Mn

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40Mn 50Mn
#45Mn

Description

China GBT 45Mn China structural steel and alloy steel and 45Mn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 45Mn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 45Mn GBT China China structural steel and alloy steel
70
75
80
85
15Mn
20Mn
25Mn
30Mn
35Mn
40Mn

Chemical composition(mass fraction)(wt.%) of the 45Mn

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.42-0.50 0.17-0.37 0.70-1.00 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade 45Mn

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
736 (≥) 456 (≥) 14 14 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade 45Mn

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
21 - -     0.14 -  
137 443 - 12.3 214   -  
247 - 22 41.2   141 113

Heat Treatment of steel grade 45Mn

Heat treated : 1756°C - 1479°C

Technological Curves of steel grade 45Mn

Cross Reference Table (Equivalent Grade) of 45Mn

Grade Standard Country Application
45Mn GBT China China structural steel and alloy steel
YF45MnV GBT China China structural steel and alloy steel
45Mn2 GBT China China structural steel and alloy steel
45MnB GBT China China structural steel and alloy steel
45MnBH GBT China China structural steel and alloy steel
40Mn 50Mn
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Jiangyou Longhai Special Steel Co.,Ltd.

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